Securing shared wireless network with infected PC

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cardlady

join:2006-08-31
Kansas City, KS

Securing shared wireless network with infected PC

I plan on reformatting 2 computers on my wireless network that may be infected and there is a third computer on the network the user of which will not allow reformatting. If I clean those 2 is there any way to prevent being reinfected by the third computer when I connect back to the network? My wireless router has an A and a G network. Would keeping them on separate networks keep the other 2 safe?

permalink · 2009-05-01 21:06:26 ·

docrice

join:2008-03-31
Fremont, CA

Re: Securing shared wireless network with infected PC

I somewhat doubt your access point has a way to bridge 802.11a and 802.11g networks separately through some sort of partitioning mechanism (separate VLANs, for example). Most home devices don't have that level of functionality.

Since the AP will more than likely bridge everyone on a common collision domain, the easiest way to reduce your risk exposure is by using a software firewall on each of your reformatted stations.

Or you can be a bit cruel and just change the access key to the Wi-Fi network (assuming you're running WPA or WPA2 via pre-shared key mechanism) and tell that owner of the third machine that until s/he sterilizes the machine with rubbing alcohol, soap, and various anti-malware software, he stays off your network. It's a bit tricky if he has physical access to your router and a spare Ethernet cable.

permalink · 2009-05-01 21:19:09 · Print ·

cardlady join:2006-08-31 Kansas City, KS	Re: Securing shared wireless network with infected PC Thanks.
	permalink · 2009-05-01 22:18:50 ·

Angelo_ The Network Guy Premium join:2002-06-18	Re: Securing shared wireless network with infected PC i dont know how complex your network is but you can jail or deny internet access to the infected pc from the rest of network.
	permalink · 2009-05-06 06:08:58 ·

tipstir

join:2004-11-14
Enfield, CT

·Cox HSI

said by cardlady

:

I plan on reformatting 2 computers on my wireless network that may be infected and there is a third computer on the network the user of which will not allow reformatting. If I clean those 2 is there any way to prevent being reinfected by the third computer when I connect back to the network? My wireless router has an A and a G network. Would keeping them on separate networks keep the other 2 safe?

Outbound network flood attacks sensor

permalink · 2009-05-15 17:36:42 · Print ·

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